poem
jonadab
<p>I suppose someone has probably already done this, but
my attempt to find it in SuperSearch failed, so here
goes. I have adapted Black Perl so that it compiles
in Perl 5. It astonished me how few changes were
necessary, and how little they disrupted the mood.
</p>
<p>I didn't do this because I like Black Perl (the first
time I read it, I thought, "how perverse"), but more
because, having read that it would not compile in
Perl 5, I felt... challenged. Though in retrospect,
it wasn't much of a challenge. Still, here it is...
</p>
<code>
# Black Perl, adapted for Perl 5 by Jonadab.
# Adapted from Black Perl, as seen in the Camel,
# 2nd ed., p 553
BEFOREHAND: close door, each window & exit; wait until time;
open spell book; study; read (spell, $scan, select); tell us;
write it, print the hex while each watches,
reverse length, write again;
kill spiders, pop them, chop, split, kill them.
unlink arms, shift, wait and listen (listening, wait).
sort the flock (then, warn "the goats", kill "the sheep");
kill them, dump qualms, shift moralities,
values aside, each one;
die sheep; die (to, reverse the => system
you accept (reject, respect));
next step,
kill next sacrifice, each sacrifice,
wait, redo ritual until "all the spirits are pleased";
do it ("as they say").
do it(*everyone***must***participate***in***forbidden**s*e*x*).
return last victim; package body;
exit crypt (time, times & "half a time") & close it.
select (quickly) and warn next victim;
AFTERWARDS: tell nobody.
wait, wait until time;
wait until next year, next decade;
sleep, sleep, die yourself,
die @last
</code>
<p>So now it compiles in Perl 5 (tested with 5.6.1), but
it still doesn't do anything useful. (I think I'm
glad.) I suppose, having taken this step, it is
inevitable that someone will also port it to Perl 6,
in time. As an interesting side note, if you change
<code>$scan</code> back to <code>scan</code>
(as in the original) it compiles but dumps core.
Maybe I should have left it that way.
</p>
<hr></hr>
<code>
sub H{$_=shift;while($_){$c=0;while(s/^2//){$c++;}s/^4//;$
v.=(' ','|','_',"\n",'\\','/')[$c]}$v}sub A{$_=shift;while
($_){$d=hex chop;for(1..4){$pl.=($d%2)?4:2;$d>>=1}}$pl}$H=
"16f6da116f6db14b4b0906c4f324";print H(A($H)) # -- jonadab
</code>